ABSTRACT
Studies of national power are studies of the ability to wage war, but the problem of the existence of different interests or goals can be resolved also within the political or economic context. With the greater involvement of citizens and other actors in political processes and contacts between people coming from different countries, politicians have been forced to devote more attention to the psychology of public opinion. Members of different social classes, strata, movements and interest groups began taking part in setting political goals and the tools used for their achievement, and therefore became the targets of persuasion. Domestic political parties, ethnic organizations and other actors also target their propaganda at other countries to ensure foreign support for their own local goals. The technique of testimonials, comprising attitudes and beliefs of esteemed people or institutions to endorse or criticize an idea, political figure or institution, is at least partly based on it as well.
